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Short Summary
Main recommendation: If you have pulsatile tinnitus (a rhythmic, heartbeat-like noise next to the ear), see an ENT doctor first, and if the problem persists, get an accurate vascular diagnosis from a neurointerventional specialist, because it is almost always caused by abnormal blood vessels or blood flow near the ear. The speaker, Dr. Tateshima, explains that only one to three percent of tinnitus is pulsatile, and that several serious conditions must be ruled out before treatment.
Key Points
- Pulsatile tinnitus is almost always vascular: the ear is normal, but abnormal arteries, veins, or blood flow next to it create turbulence the ear hears.
- The most concerning cause is dural arteriovenous fistula (dural AV fistula), an abnormal connection between scalp or muscle arteries and brain vessels; if it drains into small brain veins (cortical venous reflux), bleeding risk rises and urgent treatment is needed.
- Other causes include carotid artery narrowing or dissection near the skull base, brain tumors with abnormal vessels, high blood pressure (which can be bilateral), idiopathic intracranial hypertension, and venous sources such as the jugular bulb or emissary veins.
- Standard MRI and angiogram can read as normal even when a fistula is present; the speaker's case was missed on outside imaging and found on closer review of subtle vessel asymmetry.
- Accurate diagnosis alone can bring peace of mind, and some patients do not need the noise eliminated.
Details Worth Noting
- Concrete instructions: If you have tinnitus, see an ENT doctor first. If pulsatile tinnitus persists, especially a heartbeat-like sound right next to the ear, ask your ENT to contact the neurointerventional team, or you can call the clinic directly, for review of your MR angiogram. Request a review even if prior imaging was read as normal, since subtle abnormalities can be missed. Treatment decisions depend on the specific cause identified, so a precise diagnosis is the required first step.
- The speaker's own case: he had an MRI that showed no abnormality, self-diagnosed a cardiac-output-related cause after marathon training (he runs two marathons a year), and chose to live with it after accurate diagnosis.
- A dural fistula with cortical venous reflux was treated urgently in one patient, who had already developed a left temporal lobe bleed; the speaker stresses that such cases should be treated before bleeding occurs.
- Treatment of complex fistulas requires detailed skull base anatomy knowledge, since important nerves such as the hypoglossal nerve (controlling the tongue) pass nearby and must be avoided while blocking only the abnormal vessels.
- In one complex case, a microcatheter was placed above and below the hypoglossal canal and medical glue injected, which fully eliminated the fistula and the pulsatile tinnitus.
- In another case, a carotid artery dissection with stroke and massive noise was treated by reconstructing the carotid segment, after which both stroke risk and noise resolved.
- In a patient with a normal emissary vein draining the brain, compressing the jugular vein stopped the noise; a micro balloon test confirmed the diagnosis, and she chose no treatment after diagnosis alone.
Bottom Line
Pulsatile tinnitus can signal a serious, treatable vascular problem, so an accurate imaging-based diagnosis by a specialist matters more than assuming it is harmless.
